Therefore we have need of much intentness. For we too are sailing over a great and wide sea, full of many monsters, and of many rocks, and bringing forth for us many storms, and from the midst of serene weather raising up a most violent tempest. It is necessary then if we would sail with ease, and without danger, to stretch the sails, that is, our determination: for this is sufficient for us. For Abraham also, when he had stretched forth his affections towards God and set before Him his fixed resolution, what else had he need of? Nothing: but “he believed God, and it was counted unto him for righteousness.” ( Gen. xv. 6.) But Faith [comes] of a sincere will. He offered up his son, and though he did not slay him, he received a recompense as if he had slain him, and though the work was not done the reward was given.